Of square or rectangular cross section:
| HTS Code | Description | General | Special | Other | Units |
|---|---|---|---|---|---|
| 7306.61.10 | — | — | — | ||
| 7306.61.30 | — | — | — | ||
| 7306.61.50 | — | — | — | ||
| Having a wall thickness of 4 mm or more: | |||||
| Having a wall thickness of less than 4 mm: | |||||
| 7306.61.70 | Of alloy steel | Free | — | 35% | |